Year	Percent
1950	10.10699
1955	10.20876
1960	10.01622
1965	9.61012
1970	9.18885
1975	9.30218
1980	11.00639
1985	11.25237
1990	10.77956
1995	11.08744
2000	11.14337
2005	10.80622
2010	10.31229
2015	9.99777
2020	9.5122
2025	8.64066
2030	8.02319
2035	7.57154
2040	7.09194
2045	6.618
2050	6.17279
2055	5.8093
2060	5.55134
2065	5.34684
2070	5.17662
2075	5.03966
2080	4.9318
2085	4.85967
2090	4.80932
2095	4.78022
2100	4.76577